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10th Class Mathematics Real Numbers Question Bank MCQs - Real Numbers

  • question_answer
    If \[A=2n+13,\] \[B=n+7,\] where n is a natural number then HCF of A and B is:    

    A) 2

    B) 1

    C) 3

    D) 4         

    Correct Answer: B

    Solution :

    Sol.      [b] Taking different values of n. we find that A and B are coprime.
    \[\therefore \,\,\,\,\,\,\,\,\,\,\,\,\,\,HCF=1\]


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